Finding the Fourth Proportional to 325,395.68, 485,878.52 and 287,125.88
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Solution
The fourth proportional to 325,395.68, 485,878.52 and 287,125.88 is: 428,734.33
Step by Step Solution
- Step 1: Write the proportion equation
325,395.68 : 485,878.52 = 287,125.88 : x - Step 2: Convert to fraction form
325,395.68/485,878.52 = 287,125.88/x - Step 3: Cross multiply
325,395.68x = 485,878.52 × 287,125.88 - Step 4: Simplify right side
325,395.68x = 139,508,297,628.10 - Step 5: Solve for x
x = 139,508,297,628.10/325,395.68 - Step 6: Final answer
x = 428,734.33
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.